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Harper Road

WATertiary road1.9 km5 segments
6.5Sports
1.9 kmTotal length
5Segments
7Grey spot segments

Harper Road is a 2 km sealed tertiary route in Western Australia, Australia. It scores 6.7/10 for 4WDs with gently winding corners and fair surface.

7-day forecast

Vehicle scores
6.5/10
SPTSportsSealed roads, curviness, mountain passes
6.6/10
MOTMotoTight bends, switchbacks, technical roads
6.6/10
EVEVSmooth surface, sealed roads, range-friendly
6.7/10
4WD4WDGravel access, off-road suitability
4.0/10
VANCaravanSmooth sealed, gentle grades, no steep passes
Segment quality distribution
Sports score - 5 segments
Good (6-8)57%Fair (4-6)14%Poor (<4)29%

Sports score IQR: 4.2 - 7.8

Surface
Surface coverage
Sealed2%Unsealed98%
Score breakdown
Median component scores across all segments
Surface
5.6
Median surface quality. Smooth sealed asphalt scores 10. Chipseal 8. Gravel 5.
Curviness
4.9
Median curviness. Higher scores mean more bends per kilometre.
Speed
7.0
Speed limit suitability. Sweet spot is 60-110 km/h.
Road classTertiary road
9.0
Road classification. Motorways score zero. Tertiary roads score 9.
Traffic
9.0
Estimated traffic density. Lower traffic = higher score.
Elevation
7.0
Elevation change per kilometre. More climbing = higher score.
Crash history
Aggregated across all 5 segments
7
Grey spots

Crash record linkage not yet available for WA. Grey spots are segments where curvature geometry mismatches the posted speed limit - these are flagged regardless of crash history.

Road environment
Geometry and climate-derived risk indicators
6.7/10 safety score - higher is safer
Wet road exposure56%
Night driving risk50%
Wind exposure58%
Sun glare risk96%
Wildlife strike risk11%

Risk values derived from road geometry, orientation, weather station data, and satellite canopy cover. 0 = minimal risk, 1 = maximum risk.

Segments
API reference
Road aggregate data via the Contour API
GET/api/v1/roads/harper-road-wa-3Road aggregate - scores, stats, risk profile, activity, segment list
GET/api/v1/roads/search?q=Harper%20Road&state=WASearch roads by name

Councils & Government

This road is part of WA's road network. Contour scores every road in Australia for surface condition, curviness, grey spot classification, and 4WD track passability. If your organisation manages this road or promotes tourism in the region, this data is available via API.

Enquire about council data access →
Frequently asked questions
How long is Harper Road?+

Harper Road is approximately 2 km long. At typical touring speeds, expect around 1 hour of driving end to end, excluding stops.

Is Harper Road sealed?+

Yes. Harper Road is fully sealed for its entire length.

Is Harper Road good for motorcycles?+

It rates well. Harper Road scores 6.6/10 for motorcycles, with enough character to be worth the trip for most riders.

Can I drive Harper Road in a caravan?+

With care. Harper Road scores 4.0/10 for caravans. Some sections may be tight or rough for a heavy tow.

Is Harper Road good for an EV?+

Yes. Harper Road scores 6.6/10 for EVs. Regenerative braking on any elevation changes and smooth throttle control on the corners will both feel at home here.

Are there any dangerous sections on Harper Road?+

Contour has identified 7 grey spots on Harper Road - sections where the road geometry does not match the posted speed limit. Take extra care in wet or low-visibility conditions.

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Road data last updated: 22 April 2026. Scores are based on road geometry, surface, and traffic data. Always drive to conditions and follow local road rules.